BattleTech

BattleTech is a wargaming and science fiction franchise that focuses on enormous robotic, semi-humanoid battle machines called BattleMechs.
BattleTech is played on a map sheet composed of hexagon-shaped terrain tiles where battles are fought with 30-foot-tall (9.1 m) humanoid armored combat units powered by fusion reactors and armed with lasers, particle projection cannons, autocannons, and both short and long range missiles. Typically these are represented on the game board by two-inch-tall miniature figurines that the players can paint to their own specifications.
Heat buildup is a major limiting factor of BattleTech, and overheating a unit can have many negative affects.